Greenbrae, California Zip Codes
📍 Greenbrae is in Marin County, California with 1 zip code; the most populous is 94904.
Greenbrae is a USPS city name in Marin County, California with a Census population of approximately 13,132 across its ZIP codes. Marin County as a whole has 42 ZIP codes in this directory. Below you'll find every zip code serving Greenbrae with population, income and home value, a map, and the city's affordability profile.
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
All Greenbrae Zip Codes
Greenbrae at a Glance
Greenbrae has 1 ZIP code in this directory: 1 standard delivery ZIP. The 1 ZIP with published Census housing data cover 13,132 residents, the largest being 94904 with 13,132 people.
The median ZIP in Greenbrae has a household income of $158,338 and a home value of $1,939,900, a price-to-income ratio of 12.3, far above the 6.7 California ZIP median. Median rent across these ZIPs is $2,557 a month.
63% of households in the typical Greenbrae ZIP own their home (statewide ZIP median 64%). 72% of adults hold a bachelor's degree, far above the 31% statewide median. The median poverty rate is 5.4%, far below the 10.8% statewide ZIP median. Overall density is about 2,680 residents per square mile across 5 square miles of ZIP land area.
Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 California ZIP Code Affordability Report.
Greenbrae Zip Code Map
Interactive map of Greenbrae, California zip codes. Click any marker for details.